Migrate WebVR Cardboard implementation to GVR

device/vr/android/gvr/gvr_api_manager.h

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef DEVICE_VR_ANDROID_GVR_API_MANAGER_H
+#define DEVICE_VR_ANDROID_GVR_API_MANAGER_H
+
+#include "device/vr/vr_export.h"
+
+#include "third_party/gvr-android-sdk/src/ndk-beta/include/vr/gvr/capi/include/gvr.h"
+
+namespace device {
+
+class DEVICE_VR_EXPORT GvrApiManagerClient {
+ public:
+  virtual void OnGvrApiInitialized(gvr::GvrApi* gvr_api) = 0;
+  virtual void OnGvrApiShutdown() = 0;
+};
+
+class DEVICE_VR_EXPORT GvrApiManager {
+ public:
+  static GvrApiManager* GetInstance();
+
+  void AddClient(GvrApiManagerClient* client);
+  void RemoveClient(GvrApiManagerClient* client);
+
+  void Initialize(gvr_context* context);
+  void Shutdown();
+
+  gvr::GvrApi* gvr_api();
+
+ private:
+  GvrApiManager();
+  ~GvrApiManager();
+
+  std::unique_ptr<gvr::GvrApi> gvr_api_;
+
+  using ClientList = std::vector<GvrApiManagerClient*>;
+  ClientList clients_;
+};
+
+}  // namespace device
+
+#endif  // DEVICE_VR_ANDROID_GVR_API_MANAGER_H